921964 has 12 divisors (see below), whose sum is σ = 1633464. Its totient is φ = 455264.

The previous prime is 921959. The next prime is 921989. The reversal of 921964 is 469129.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057 + ... + 1720.

It is an arithmetic number, because the mean of its divisors is an integer number (136122).

2⁹²¹⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

921964 is a deficient number, since it is larger than the sum of its proper divisors (711500).

921964 is a wasteful number, since it uses less digits than its factorization.

921964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864 (or 2862 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 921964 is about 960.1895646173. The cubic root of 921964 is about 97.3280422886.

The spelling of 921964 in words is "nine hundred twenty-one thousand, nine hundred sixty-four".